Count of the number of options selected in a multi-select drop

So I am having an issue creating a new measure which will count the number of items selected in a multiselect field. so it should return the count of how many options is selected in this field and then I will work on adding formatting later on.

Count of the number of options selected in a multi-select drop down - Questions & Answers - eazyBI Community

How to Make Multiple Selection in Drop-down Lists in Google Sheets

Improving the usability of multi-selecting from a long list, by Zina Szőgyényi, Tripaneer Techblog

Multi Select: display only selected items count after x number of items are selected/shown in chips · Issue #3856 · JedWatson/react-select · GitHub

Count Multi Select dropdown values — Smartsheet Community

Select Multiple Items from a Drop Down List in Excel

Awesome CSS Select Styles You Can Use Right Now

Select Multiple Items from a Drop Down List in Excel

Google Sheets Tutorial – How to Enable Multiple Selection Data Validation Using Apps Script

Flutter Dropdown Button Dropdown Single and Multi List Widget

Multi-select Dropdown List with Checkbox using jQuery - CodexWorld